US2978736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge with nonrising hinge pin
Assignee: Lawrence Brothers Inc
•
Filing: 1957-09-26
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Granted: 1961-04-11
•
Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Adam E Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:57
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/10; E05D5/12; E05D5/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US112417A
Cited
US2734223A
Cited
US1862432A
Cited
US1936769A
Cited
US2748420A
Cited
US2772441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |